Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7293690 | Method of manufacturing metallic composite material Disclosed is a method of manufacturing a metallic composite material for use as building material, the metallic composite material including an aluminium core sheet and a titanium clad layer on at least one side of the core sheet. The aluminium core sheet and titani... | 11/13/2007 |
| 7220494 | Metal dusting resistant product A product resistant or immune to carburization, metal dusting, coking, oxidation, and having sufficient mechanical strength for use at temperatures greater than 400° C. The product consists of a load-bearing member and a corrosion resistant member, wherein the corr... | 05/22/2007 |
| 7073238 | Single slitting process for recycling rail A method for recycling rail is provided wherein the rail is heated, and then slit into two pieces. The two pieces are passed through a single mill pass line such that each piece of the rail is deformed to have a generally uniform shape. ... | 07/11/2006 |
| 6926779 | Lead-free copper-based coatings with bismuth for swashplate compressors A surface of aluminum alloy or iron alloy coated, on at least a part, with a lead-free copper-based coating layer comprising, by weight, 0.2–15% bismuth, and at least one metal selected from the group consisting of 5–40% nickel, 1–20% chromium, 1–20% iron, a... | 08/09/2005 |
| 6722002 | Method of producing Ti brazing strips or foils A method for producing titanium alloy brazing strips and the resulting brazing strips and/or foils. The method uses a cold-rolling process without annealing to generate a titanium based multi-layer alloy strip or foil made up of discrete layers of titanium and an ad... | 04/20/2004 |
| 6534194 | Method of making reactive multilayer foil and resulting product In accordance with the invention a reactive multilayer foil is fabricated by providing an assembly (stack or multilayer) of reactive layers, inserting the assembly into a jacket, deforming the jacketed assembly to reduce its cross sectional area, flatteni... | 03/18/2003 |
| 6386426 | Solder material and method of manufacturing solder material Disclosed is a solder material and a manufacturing method thereof. The solder material has a first layer composed of a first metallic material and a second layer composed of a second metallic material which is different from the first metallic material, t... | 05/14/2002 |
| 6375059 | Method for smoothing steel pipe seam portion A method and apparatus for smoothing a thick walled portion of a steel pipe produced by pressure-welding two opposite longitudinal edges of an open pipe with a squeeze roll after being subjected to induction heating. Outer and inner reduction rollers pres... | 04/23/2002 |
| 6344117 | Backing plate for sputtering A backing plate 1 for sputtering is constituted by a base portion 2 comprising a plate member made of aluminum or its alloy, a surface of which is attached with a target T of an ITO sintered body or the like and a cooling portion 3 in a flat plate shape h... | 02/05/2002 |
| 6288361 | Method and device for joining flat products to be connected such that they overlap The invention relates to the joining of flat products of metallic materials to be interconnected overlapping. The joining takes place in a roll nip into which the flat products to be interconnected are introduced at an acute angle. Before they are pressed... | 09/11/2001 |
| 6214135 | Entry board for drilling small holes, a method of making the same and a method for drilling small holes through a printed circuit board by using said entry board An entry board for drilling small holes having a front surface layer made of aluminum or aluminum alloy to be disposed at the drilling inlet side and a back surface layer made of aluminum or aluminum alloy to be disposed at the drilling outlet side. The b... | 04/10/2001 |
| 5377899 | Method for producing solder that contains therein additive particles maintaining its shape Of two sheet-like solder stocks, one sheet-like solder stock is fed at a constant speed, and additive particles having a constant particle diameter are spread on an upper surface of the one solder material sheet in a quantitative fixed quantity. The other... | 01/03/1995 |
| 5370753 | Process for cladding precious metals to precipitation hardenable materials A process for cladding precious metals to precipitation hardenable materials. In accordance with one aspect of the present invention, are the steps of (i) placing a precious metal layer of a first selected thickness atop a selected beryllium-copper alloy ... | 12/06/1994 |
| 5361965 | Secondary coil plate for linear motor and producing method of the same A secondary coil for a linear motor, which is a composite metal plate comprising a backing metal layer 1, an intermediate bond metal layer 2 and a surface metal layer 3 which are integrally connected, the intermediate bond metal layer being formed of alum... | 11/08/1994 |
| 4923100 | Process for producing clad sheets A clad sheet comprising a metal substrate and a metal cladding layer laminated on at least one surface of said substrate, wherein said cladding layer-laminated surface of said substrate includes a hardened layer portion formed by melting and rapid solidif... | 05/08/1990 |
| 4896813 | Method and apparatus for cold rolling clad sheet Metals to be bonded are drawn from pay-off reels and passed around holding rollers which are grounded cathodes, each roller being partially exposed in an etching chamber having an anode area at least three times the exposed area of the cathode. Each chamb... | 01/30/1990 |
| 4882236 | Rigid magnetic recording disks and method of producing same The present invention discloses a rigid magnetic recording disk and a method of making the same. The substrate is formed by metallurgically bonding at least a first and second layer of clad materials. The hardness and mechanical strength of the first laye... | 11/21/1989 |
| 4834281 | Porous metallic material, porous structural material and porous decorative sound absorbing material, and methods for manufacturing the same A porous metallic material of the present invention is constructed of a laminate consisting of an expanded metal and a fibrous metallic fiber both of which are pressed to be joined to each other under pressure. This porous metallic material is excellent i... | 05/30/1989 |
| 4771537 | Method of joining metallic components A method of joining metallic layers of foil is disclosed. The layers of foil are spaced apart from each other a desired distance. A metallic component disposed between the layers of foil is in selective contact with each of them. The metallic component is... | 09/20/1988 |
| 4687053 | Heat exchanger panel and manufacturing method thereof Heat exchanger panel and process of making such panel comprised of selectively clad or bonded metal plates made of a material which cannot be cold roll bonded without great difficulty, if at all, with at least one channel disposed therebetween. An adhesiv... | 08/18/1987 |
| 4568014 | Bonding of metallic glass to crystalline metal A method of bonding a first thin crystalline metal to a second thin metal ch as metallic glass is disclosed. Initially, the metallic glass is coated with a thin thermal barrier layer. Next, the first metal is heated to a temperature sufficient for diffusi... | 02/04/1986 |
| 4541559 | Method of making electrical connections between opposing metal foils having a flexible, insulating layer sandwiched therebetween A method of making electrical connections between metal foils laminated to opposing surfaces of a flexible insulating layer, such as may be configured with spiral patterns in the respective metal foils to form inductive-capacitive circuits useful as detec... | 09/17/1985 |
| 4500028 | Method of forming a composite material having improved bond strength A composite material having improved bond strength and a substantially smooth external surface comprises a deoxidized copper alloy core material and a copper-aluminum-silicon clad material. The composite is formed by rolling together the core and clad, pr... | 02/19/1985 |
| 4467954 | Process for obtaining a composite article A process for forming a composite material from a core material having a first yield strength and a clad material having a second yield strength comprises passing the materials through at least one roll bite formed by at least two rolls rotating at differ... | 08/28/1984 |
| 4423120 | Laminating method and article A method of laminating first and second metal sheets to one another, comprises the steps of superposing the metal sheets and including therebetween a layer of amorphous metal and laminating the sheets to one another. During the lamination a pressure is ap... | 12/27/1983 |
| 4362262 | Method of forming a composite material Novel and advantageous metal laminates particularly useful in making coins comprising a copper core and a cladding metallurgically bonded thereto of a copper base alloy containing from 2 to 3.5% aluminum, from 1 to 2.5% silicon and the balance essentially... | 12/07/1982 |
| 4343425 | Process and device for the production of a composite section A process allows the production of composite sections made of at least two component parts such as conductor rails or the like having a beam-like section with a facing in the form of a conductive metal strip. The process makes use of an extrusion die wher... | 08/10/1982 |
| 4209885 | Process and apparatus for making composite sheet and heat exchanger panels therefrom A process and apparatus for making composite sheet and heat exchanger panels therefrom. At least two sheets of metal are bonded together by cold rolling to form a "green" bond. Immediately following the bonding operation the as bonded composite is quickly... | 07/01/1980 |
| 4202709 | Method for manufacturing aluminum or aluminum alloy clad steel sheet or strip A method for manufacturing an aluminum or aluminum alloy clad steel sheet in an easy, economical manner. An aluminized steel sheet obtained by applying aluminum or an aluminum alloy to a steel sheet by hot dipping is heated to a temperature between 100° ... | 05/13/1980 |
| 4055062 | Process for manufacturing strip lead frames There is disclosed a process for producing strip material useful for making lead frames which includes preparing a ferritic stainless steel substrate as a thin strip and, before subjecting it to finish rolling, electroplating it with a first layer of copp... | 10/25/1977 |
| 4038041 | Composite interlayer for diffusion bonding An interlayer for transient liquid phase diffusion bonding of the nickel, cobalt and iron alloys is provided between surfaces to be joined as a thin lamellar composite.... | 07/26/1977 |
| 4011982 | Surface joining by bonding of metal and deposited metal A method is described for joining first and second surfaces by depositing a layer of metal on the first surface, preparing the second surface to expose fresh metal, placing the deposited metal and the exposed metal in contact, and applying sufficient pres... | 03/15/1977 |
| 3997099 | Method of producing composite material for bearings or sliding members A method of producing composite material for bearings or sliding members, comprising applying pressure, by rolling, simultaneously to a strip having a steel backing and a layer of copper-base alloy bonded to the steel backing, and a strip of lead-base all... | 12/14/1976 |
| 3938723 | Method for rolling thin metal films The specification and drawings disclose a method and apparatus for rolling plural metal strips simultaneously to form thinner metal strip or foil. The method allows use of larger diameter rolls and simpler roll supporting structure and mill controls than ... | 02/17/1976 |
| 3933293 | Method of making composite metal seals for use in rotary internal combustion engines A composite metal rotor tip seal for use in rotary internal combustion engines and a process for making a composite rotor tip seal. The composite seals are formed from at least two different metals or alloys having different frictional and wear characteri... | 01/20/1976 |